package com.stk.triplecity;

import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.database.sqlite.SQLiteStatement;
import android.util.Log;
 
import java.util.ArrayList;
import java.util.List;
 
public class SQLManager {
 
   private static final String DATABASE_NAME = "triple.db";
   private static final int DATABASE_VERSION = 1;
   private static final String TABLE_NAME = "scores";
 
   private Context context;
   private SQLiteDatabase db;
   private OpenHelper openHelper;
 
   private SQLiteStatement insertStmt;
   private static final String INSERT = "insert into "+ TABLE_NAME + "(name, score) values (?,?)";

   public SQLManager(Context context) {
      this.context = context;
      openHelper = new OpenHelper(this.context);
      this.db = openHelper.getWritableDatabase();
      this.insertStmt = this.db.compileStatement(INSERT);   
   }
 
   public long insert(String name, String score) {
      this.insertStmt.bindString(1, name);
      this.insertStmt.bindString(2, score);
      return this.insertStmt.executeInsert();
   }
 
   public void deleteAll() {
      this.db.delete(TABLE_NAME, null, null);
   }
 
   public List<String[]> selectAll() {
      List<String[]> list = new ArrayList<String[]>();
      Cursor cursor = this.db.query(TABLE_NAME, new String[] { "name", "score" }, 
        null, null, null, null, "score desc");
      if (cursor.moveToFirst()) {
         do {
            list.add(new String[]{cursor.getString(0), cursor.getInt(1) +""}); 
         } while (cursor.moveToNext());
      }
      if (cursor != null && !cursor.isClosed()) {
         cursor.close();
      }
      return list;
   }
   
   public void close(){
	   this.db.close();
	   this.insertStmt.close();
	   this.openHelper.close();
   }
 
   public static String getTableName() {
	return TABLE_NAME;
}



private static class OpenHelper extends SQLiteOpenHelper {
 
      OpenHelper(Context context) {
         super(context, DATABASE_NAME, null, DATABASE_VERSION);
      }
 
      @Override
      public void onCreate(SQLiteDatabase db) {
         db.execSQL("CREATE TABLE " + TABLE_NAME + "(id integer primary key autoincrement, name TEXT, score INTEGER)");
      }
 
      @Override
      public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
         Log.w("Example", "Upgrading database, this will drop tables and recreate.");
         db.execSQL("DROP TABLE IF EXISTS " + TABLE_NAME);
         onCreate(db);
      }
   }
}